1．用类的形式改写程序，将程序中工资数据用链表的形式存放，定义一个链表类，封装主要的操作函数。

2．显示、修改、删除数据项时大小写通用。

3．工资数据按工资值的大小进行排序存放。

4．修改、删除数据前增加提示信息，用户确认后才能进一步操作，否则操作取消。

5．增加程序的文件输入输出功能，在执行程序中首先将工资数据从文件中读出再进行管理，在程序结束时能将工资数据保存在原文件中。

-1. With the class in the form of rewriting procedure will be the program list in the form of wage data storage used to define a list class, packaging and key operational functions. 2. Display, modify, delete data items common case. 3. Wage data by wage on the size of the sort stored. 4. Modify or delete the data before the increase prompts the user to confirm before further action, or operation canceled. 5. To increase the program' s file input and output functions in the implementation of the program will first wage data read from the file and then to manage the end of the process can wage data stored in the original file.